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001046019 1001_ $$0P:(DE-Juel1)192542$$aWu, Jianchang$$b0$$eCorresponding author
001046019 245__ $$aDiastereomeric Fullerene Composite Engineering for Enhanced Perovskite Solar Cells
001046019 260__ $$aWashington, DC$$bACS Publications$$c2025
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001046019 520__ $$aAchieving high performance and long-term stability in perovskite solar cells (PSCs) typically requires the use of surface passivation layers to suppress the interfacial defects. However, these additional passivation agents often introduce chemical and structural instabilities, limiting the device lifetime. Here, we present a molecular engineering strategy utilizing a chiral series of C60-Furan-Sugar (CFS) fullerene derivatives blended with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) to modify the electron transport layer (ETL). The incorporation of CFSs significantly enhances the electron mobility and dielectric constant of the ETL, while their intrinsic passivation functionality effectively passivates perovskite surface defects. As a result, PSCs employing PCBM:CFS-RS blends achieve a power conversion efficiency (PCE) of 25.81% without the use of additional passivation layers and retain 95% of their initial performance after 1000 h of aging. Notably, CFS-RS is a chiral molecule bearing a side chain with R/S configurational isomers, which facilitates interfacial compatibility and contributes to the enhanced device performance. This work demonstrates that tuning the orientation of polar substituents in fullerene side chains can effectively influence the optoelectronic properties of the blended films, thereby simultaneously enhancing both efficiency and stability in PSCs.
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001046019 7001_ $$0P:(DE-Juel1)194716$$aZhang, Jiyun$$b1
001046019 7001_ $$0P:(DE-HGF)0$$aWang, Luyao$$b2
001046019 7001_ $$0P:(DE-HGF)0$$aJakšić, Jovana$$b3
001046019 7001_ $$0P:(DE-Juel1)210193$$aBarabash, Anastasia$$b4
001046019 7001_ $$00000-0002-1382-8785$$aVeljković, Dušan$$b5
001046019 7001_ $$00000-0001-9992-5449$$aBornschlegl, Andreas J.$$b6
001046019 7001_ $$0P:(DE-HGF)0$$aJovanov, Vladislav$$b7
001046019 7001_ $$0P:(DE-Juel1)191082$$aLahn, Leopold$$b8$$ufzj
001046019 7001_ $$0P:(DE-Juel1)191088$$aKasian, Olga$$b9$$ufzj
001046019 7001_ $$0P:(DE-HGF)0$$aPérez-Ojeda, M. Eugenia$$b10
001046019 7001_ $$00000-0003-2019-2137$$aGötz, Klaus$$b11
001046019 7001_ $$00000-0002-8903-4850$$aUnruh, Tobias$$b12
001046019 7001_ $$00000-0002-8399-4244$$aLi, Chaohui$$b13
001046019 7001_ $$00000-0003-3678-6538$$aPeng, Zijian$$b14
001046019 7001_ $$0P:(DE-Juel1)208897$$aWang, Yunuo$$b15
001046019 7001_ $$0P:(DE-Juel1)177626$$aHauch, Jens$$b16
001046019 7001_ $$00000-0002-8588-1825$$aDeng, Lin-Long$$b17
001046019 7001_ $$aMaslak, Veselin$$b18
001046019 7001_ $$0P:(DE-HGF)0$$aMitrović, Aleksandra$$b19$$eCorresponding author
001046019 7001_ $$00000-0001-8399-7771$$aLi, Gang$$b20$$eCorresponding author
001046019 7001_ $$0P:(DE-Juel1)176427$$aBrabec, Christoph$$b21$$eCorresponding author
001046019 773__ $$0PERI:(DE-600)1472210-0$$a10.1021/jacs.5c10340$$gVol. 147, no. 35, p. 32045 - 32053$$n35$$p32045 - 32053$$tJournal of the American Chemical Society$$v147$$x0002-7863$$y2025
001046019 8564_ $$uhttps://juser.fz-juelich.de/record/1046019/files/Diastereomeric%20Fullerene%20Composite%20Engineering%20for%20Enhanced%20Perovskite%20Solar%20Cells.pdf$$yPublished on 2025-08-21. Available in OpenAccess from 2026-08-21.
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